Plug



L. STEPHENS Aug. 21, 1923.

PLUG

Filed Nov, 28 1921 ml/5mm b 90;; hens, ZPPWL/ WITNESSES Lam re nee? A TTOR/VEVS Patented Aug. 21, 1923.

PATENT fiii 'i ii ll' twi l-As rawnnlvcn srnrnsns, or MAR-IETTA, onro.

PLUG.

Application filed NovcmbenQS, 1921. serial No. 518,37

To all whom it may concern: t

Be it known that I, LAWRENCE Srnrrrmvs, a citizen of the United States, and resident of Marietta, in the county of \Vashington and State-of Ohio have invented certain new and useful Improvements in Plugs of whichthe following is a specification.

This invention relates to packer plugs and is an improvement on the construction illustrated in my allowed application for patent, S. N. 403,4 5, filed August 14:, 1920.

Briefly stated the invention forming the subject matter of this application resides in a packing plug preferably formed of a single piece of wood or the like and having a plurality of segmental sections adapted to be 'movedlongitudinally with relation to each other so as to increase the cross sectional area of the plug.

A further object is to provide a packing plug of the class described which is of highly simplified construction, simple to use and cheap to manufacture.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a perspective of the improved plug expanded.

Figure 2 is a group perspective of the improved plug.

Figure 3 is a horizontal sectional view taken on line 33 of Figure 1.

In the drawing wherein for the purpose of illustration is shown a preferred embodiment of the inventionthe numeral 5 generally designatesthe improved plug which is preferably formed from a single piece of wood or the like turned on a lathe or other suitable tool and having its end portions reduced to provide heads 6 and 7. Subsequent to turning the piece of wood on a lathe to provide the reduced end portions 6 and 7, the body of the plug is provided with a series of incisions which define segmental sections 8, 9, 10 and 11, the sections 8 and 9 being similar to each other while the sections 10 and 11 are similar to each other.

The sections 8 and 9 have plain surfaces 12 gradually decreasing in width toward the free end of the sections8 and 9. More specifically each section 8 and 9 is provided with a pair of plain surfaces 12 which decrease in width toward the free end of the sections whereby the cross sectional area of each section decreased toward its free end. One. surface 12 of the section 8 contacts with the opposed plain surface 12 of the section 9 so that when the sections are moved longitudinally with relation to each other the cross sectional area of the plug will be increased or decreased according to the direction of movement of the sections.

Each of the sections 10 and 11 are similarly constructed and the section 11 is provided with flat contact surfaces 16 and 17, the contact surface 16 being gradually decreased in width toward one end of the section while the plain contact surface 17 gradually decreased in width toward the other end.

The section 10 which is constructed sirnilarly to the section 11 is provided with a plain contact surface 18 which gradually decreases in width toward the upper end of the section and with another plain surface adapted to contact with the surface 17 and which decreases in width toward the lower end of the section. V

hen cuttinc' the stock into the sections as illustrated in Figure 2 the reduced head 6 is allowed to remain on the setion 8 while the reduced head 7 is allowed to remain on the section 9 and by reference to Figure 3 it will be seen that the diameter of the head 7 is less than the greatest diameter of the sec tion 8 so that the head 6 will not interfere with ;the insertion of the plug into the well to be plugged.

In assembling the sections of the plug, the terminal portion of the section 8 is arranged in contact with the terminal portion of the section 9 so that the cross sectional area of the plug is reduced to a minimum. The sec tions 10 and 11 are arranged in overlapping relation to each other and in overlapping relation with relation to the ends ofthe sections 8 and 9 whereby a more or less continuous body is provided. Before lowering the sections into a well the same may be lightly connected by means of small nails or the like and when the head 7 on the lower end of the plug strikes the bottom a suitable tool may be engaged with the upper end or head 6 so as to move the sections longitudinally with relation to each other.

In operation. the several sections may he easily moved with relation to each other so as t effectively seal the well which may be either an oil, gas, water or other well.

Having thus described the invention,.what is claimed is V l. A plug of the class described comprising a pair of segmental sections each having a pair of plain surfaces uniformly decreasing in width toward an end of the plug, and a second set of segmental sections cooperating with the first named sections in forming a plug of cylindrical formation, each of said second named sections being provided with two flat faces which decrease in width toward opposite ends, whereby longitudinal movement of one of the sections of the first and second named pairs of sections will enlarge the cross sectional area of the plug.

2. A plug of the class described comprising a pair of segmental sections each having a pair of plain surfaces uniformly decreasing in width toward an end of the plug, and a second set of segmental sections cooperating with the firstnamed sections in forming a plug of cylindrical formation, each of said second named sections being provided with two flat faces whichdecrease in width toward opposite ends, whereby longitudinal movement of one of the sections of the first and second named pairs of sections will enlarge the cross sectional area of the plug, one of the first named pair of sections and one of the second named pair f sections being provided with a head.

3. A plug of the class described comprising a pair of segmental sections each having a pair of plain surfaces uniformly decreasing in width toward an end of the plug, and a second set of segmental sections cooperating with the first named sections in forming a plug of cylindrical formation, each of said second named sections, being provided with two flat faceswhich decrease in width toward opposite ends, whereby longitudinal movement of one of the sections of the first and second named pairs of sections will enlarge the cross sectional area of the plug, one of said sections being provided with a head.

4. A packing plug for wells comprising a plurality of segmental sections having their opposed faces in contact, a air of said sections being provided at t eir ends with heads.

LAWRENCE sTEPH Ns; 

